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X90 opus help

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(@jimth)
Posts: 5
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I bought two units a few months back and so far have been pleased with the reliability. I bought them primarily for elevation certificate preparation. Nothing like having to run a level loop for 3 hours. My question is this...

On a 2 hour observation I can upload to opus and get a solution back in a matter of minutes. This happens the same day within a few hours of the observation. On rapid static I have to wait until after midnight to upload and get an opus solution. Oh I can upload a rapid static obs the same day but I only get error reports returned. The same rinex file uploaded the following day brings back a solution within minutes.

Is this normal?

 
Posted : November 23, 2014 7:06 am
(@sirveyr)
Posts: 128
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Quite normal. I get the same thing. I believe it has to do with lack of availability of data from the multiple CORS required for OPUS-RS.

It is not receiver specific. My GRX1 and HiPer V's do it as well.

 
Posted : November 23, 2014 7:18 am
(@radiored)
Posts: 46
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Wait a day. It work then

 
Posted : November 23, 2014 7:58 am
(@jimmy-cleveland)
Posts: 2812
 

I have the same issues with my two OPUS X90 receivers as well as my two Topcon Hipers.

I have started running 2 hour sessions for most of my elevation work. I use OPUS RS as a blunder check when doing horizontal control.

I have not done it yet, but you can always split the 2 hour files up into smaller files and use OPUS RS for additional data analyis.

 
Posted : November 23, 2014 8:45 am
(@mark-silver)
Posts: 713
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And it is location dependent too. If you are surrounded by hourly CORS stations, then there is a really good chance that the OPUS-RS solution will be available quickly.

What is happening is:

"OPUS-RS needs more nearby CORS available than OPUS-Static (which only needs 3 stations and for static they don't need to be that near.)"

So the Static solution needs only 3 stations and they can be much farther away.

In some areas, like the center of Michigan for example where there is literally a hourly reporting CORS station on every corner in every town (okay, maybe I am exaggerating a little bit,) OPUS-RS is a dream come true.

Other places, like Utah or Wyoming for example, not-so-much.

Thanks for purchasing a X90-OPUS! Hopefully it is serving you well.

Mark

 
Posted : November 23, 2014 4:40 pm
(@mightymoe)
Posts: 9920
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Speaking from the Big Open, in use static for "rough" delegation control, but not OPUS, that's too rough;-)

 
Posted : November 23, 2014 7:22 pm